Multi-mode air management system and method

Abstract

The present invention relates to a multi-mode heat exchanger and air ventilation system and method. Different modes of the system can be allowed by rotation of the fan assembly to allow airflow into specific airways, thus functioning as both a fan and a valve. Each air handling unit is connected to a centralized network that allows simultaneous control of multiple units in response to internal or external air characteristics.

Description

[0001] Cross-references to related applications

[0002] This patent application claims the benefit of priority to U.S. Provisional Patent Application No. 62 / 972,818, entitled “Multi-mode Air Management System and Method,” filed on February 11, 2020, with the United States Patent and Trademark Office, the contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to the field of air management units (AHUs). More specifically, this invention relates to the field of AHUs with multi-mode fans and methods for simultaneously controlling airflow in multiple zones. Background Technology

[0004] Currently, most existing air delivery units used in commercial or agricultural buildings rely on traditional components that have remained largely unchanged for many years. Typically, the system includes regulating dampers connected to a centrifugal fan adapted to heat outside air before it enters the controlled area. Such components are often bulky, not only because of their individual size but also because of the space required for the ductwork system and other auxiliary components to ensure proper unit function.

[0005] When needed, components such as valves and collectors can be used to change the direction of airflow within the unit. In some smaller or more technologically advanced units, the fan itself, such as an electronically commutated (EC) fan, can change the airflow direction by altering the rotation of its blades. Reversing the rotational motion, especially if performed for a short period, requires a significant amount of energy from the motor. Currently, the aerodynamic characteristics of fan blades are typically optimized to generate efficient airflow in one direction of rotation. Therefore, fan commutation is often inherently inefficient, resulting in high energy consumption. Given the sheer number of such units used in various commercial or agricultural buildings worldwide, finding and applying more energy- and space-efficient systems and / or methods to control and change airflow direction would significantly reduce costs. Therefore, there is a need for methods and devices to adjust the air characteristics of one or more areas through energy-efficient mode changes. Summary of the Invention

[0006] The drawbacks of existing technologies are usually mitigated by multi-mode heat exchangers and air ventilation systems.

[0007] In one aspect of the invention, a multi-mode air management unit (AHU) is provided. The AHU includes a heat exchange unit in seamless fluid communication with warm and cold airflows, and includes one or more multi-mode pivot fans. The AHU may also include a controller communicating with a network, configured to receive requests from a remote computerized device, such as a computer, smartphone, tablet, etc. The controller may also be configured to adjust the characteristics of an area upon receiving such a request.

[0008] In one aspect of the invention, the AHU may include heating, cooling, ventilation, and air control functions. It is understood that while the embodiments described herein control air, other embodiments controlling any type of fluid are also within the scope of the invention.

[0009] In another aspect of the invention, the heat exchange unit may be a heat exchange block. A heat exchange block is typically made of multiple parallel plates arranged to receive a first airflow in a first direction and a second airflow in a second direction, without contacting each other. The first airflow comprises almost entirely cold air, and the second airflow comprises almost entirely warm air. Each airflow enters through a first surface and exits towards its respective opposite surface, the surface through which the first airflow enters is adjacent to the surface through which the second airflow enters.

[0010] In another aspect of the invention, at least one fan may be located at the junction of multiple airflow channels. The fan may be a directional fan adapted for axial rotation, such as any type of fan that moves air in a unidirectional direction. The fan is mounted within an air duct on a pivoting bracket, allowing rotation of at least 90 degrees. This rotation may be powered by at least one motor. The motor may be located above and / or below the fan's center of gravity. The fan bracket may be egg-shaped and may include openings at each end, each opening fluidly connected via a channel to allow airflow from a first end to a second end. The fan and / or associated mechanisms are adapted to provide airflow from the first air duct while blocking airflow from the second air duct, thereby serving as both a fan and airflow control function. When airflow is provided from the first air duct, each opening may be adapted to provide an airtight seal with the second air duct, and vice versa. This seal is generally designed to always provide contact between the AHU's housing and the fan mount, even when pivoting in both modes. By isolating the channel from the other air ducts, only one airflow passes through the fan.

[0011] In some embodiments, the AHU includes a housing. In such embodiments, the egg-shaped fan can pivot or rotate freely within the housing. A bracket can allow the pivoting fan to be removed from the housing or from the AHU, for example, for maintenance or replacement purposes. In other embodiments, the fan bracket can be cylindrical, spherical, or any other shape that allows the fan to be mounted and rotated.

[0012] In another aspect of the invention, the AHU includes two pivoting fans and can provide up to four different operating modes. Specifically, a first operating mode provides one fan to blow air out of a zone into the heat exchange unit, while the other fan blows air from the heat exchange unit into said zone. A second operating mode provides a fan to blow air out of a zone or area without directing air to the heat exchange unit. A third operating mode provides a fan to blow air directly into a zone without directing air to the heat exchange unit. Finally, a fourth operating mode provides a fan to blow air directly into the zone, while the other fan blows air directly out of the zone without directing air to the heat exchange unit. It should be understood that, independent of the selected mode, each fan can direct air into each airflow channel of its junction; into the heat exchange unit, out of the heat exchange unit, into a controlled area, and out of a controlled area.

[0013] In another aspect of the invention, a defrosting / de-icing and / or cleaning device is provided on a heat exchange block. The device is connected to a housing adapted to move from one side of the block to the other. The device can be moved using a worm screw driven by a motor assembly. The device remains on adjacent surfaces of the block. Typically, the defrosting and de-icing unit is mounted near the cold air inlet of the heat exchanger, and the cleaning unit is located near the hot air inlet. The cleaning unit may be supplemented with a phage dispenser.

[0014] In another aspect of the invention, a method is provided for regulating an area by means of a network through the control of one or more AHUs. In some embodiments, the method includes a computerized means for receiving data from sensors, meteorological data, and pollution alarms. This data may be associated with one or more areas. The received data is analyzed by the computerized means. In some embodiments, a calculated action is sent as a request to each AHU unit.

[0015] In another aspect of the invention, a fan assembly is provided. The fan assembly includes a first air duct, a housing pivotally connected within the air duct, the housing including an intake passage and an exhaust passage, and a fan unit mounted on the housing. In a first mode, the housing is pivotally oriented to generate a first airflow in the first air duct, and in a second mode, the housing is pivotally oriented to substantially restrict the airflow in the first air duct. In the second mode, the housing may also block the airflow in the first air duct. In the second mode, the housing may hermetically block the airflow in the first air duct. The fan assembly may further include a housing receiving the first air duct, the housing being capable of including a plurality of removable portions. In a third mode, the housing is pivotally oriented to generate a third airflow in the first air duct that is opposite to the first airflow.

[0016] The fan assembly may include a second air duct, wherein in a first mode, the housing further substantially restricts airflow in the second air duct, and in a second mode, the housing generates a second airflow in the second air duct. In the first mode, the housing may block airflow in the second air duct, and in the second mode, the housing may block airflow in the first air duct. In the first mode, the housing may hermetically block airflow in the second air duct, and in the second mode, the housing may hermetically block airflow in the first air duct.

[0017] The fan assembly may include a housing that houses first and second air ducts. The housing may also include multiple removable portions. In a third configuration, the housing is pivotally oriented to generate a third airflow in the first air duct, the third airflow being opposite to the first airflow. In a fourth configuration, the housing is pivotally oriented to generate a fourth airflow in the second air duct, the fourth airflow being opposite to the second airflow. The fan unit may be located at the intersection between the first and second air ducts.

[0018] The fan assembly may include at least one gas sensor connected to the fan unit, which detects one or more gas characteristics. The gas sensor may be an electronic nose. The housing may have a curved shape.

[0019] The fan unit may also include a pivoting mechanism for pivoting the housing relative to the first air duct. The fan unit may also include a controller for starting and stopping the pivoting mechanism. The controller may be programmed to control the rotational position of the pivoting mechanism. The fan assembly may also include an engagement mechanism for engaging and disengaging from the pivoting mechanism. The engagement mechanism may be a manual clutch.

[0020] The pivoting mechanism may include one or more limit switches configured to detect the current radial position of the housing. The fan unit may be a centrifugal fan or an axial fan. The housing may be rotary molded.

[0021] In another aspect of the invention, a multi-mode air management unit (AHU) is provided between a first region and a second region. The AHU includes a structure, a heat exchanger, a first fan assembly and a second fan assembly connected to the structure, each of the fan assemblies including first and second intersecting air ducts, the first air duct being in fluid communication with the first region, and the heat exchanger and the second air duct being in fluid communication with both the first and second regions, a housing pivotally connected at the intersection of the first and second air ducts. The housing includes an intake passage and an exhaust passage, and a fan unit mounted to the housing, the housing being pivotally oriented to alternately generate a first airflow in the first air duct and a second airflow in the second air duct.

[0022] The first and second fan assemblies may be adjacent to each other. The structure may have a first surface in contact with the first region and a second surface in contact with the second region. The structure may include recesses adapted for attachment to a fork on a vehicle. The first region may be an enclosed region, and the second region may be external.

[0023] The pivoting of the housing of the first fan assembly can be independent of the pivoting of the housing of the second fan assembly. The relative positions of the housings of the first and second fan assemblies allow for different operating modes of the AHU. Each of the first and second fan assemblies can pivot to create a direct airflow between the first and second regions.

[0024] Each fan assembly can be removed from the AHU. The AHU can be configured to be installed flush with the wall supporting the AHU in the first area.

[0025] In another aspect of the invention, a method for alternating between a first airflow pattern and a second airflow pattern is provided. The method may include pivotally orienting a housing for a first duct to generate a first airflow in the first duct, the housing including a fan unit and pivotally orienting the housing to restrict or block the first airflow in the first duct.

[0026] The method may include pivoting and oriented a housing in a first air duct to generate a third airflow opposite to the first airflow. The method may also include pivoting and oriented a housing in a second air duct to generate a second airflow while restricting the first airflow in the first air duct. The method may further include pivoting and oriented a housing in the second air duct to generate a fourth airflow opposite to the second airflow.

[0027] In another aspect of the invention, a method is provided for controlling different operating modes of an air management unit (AHU) based on control parameters between two zones, the method comprising a controller receiving control parameters from one or more capture devices of the AHU, the controller determining an operating mode of the AHU based on the received control parameters, and automatically pivoting at least one fan unit for one duct of the AHU based on the determined operating mode to generate or block airflow in the duct.

[0028] The method may also include automatically pivoting the second fan unit in the second duct of the AHU based on the determined operating mode to generate or block airflow in the duct.

[0029] The first area may also include a controller receiving data from external data resources. Data from external data resources may include any of the following: meteorological data, radioactivity data, air quality data, and pollution data.

[0030] The method may also include using the captured control parameters to train an artificial intelligence algorithm, and using the trained artificial intelligence algorithm to determine the AHU's operating patterns. Training the artificial intelligence algorithm may include providing feedback from one or more users of the AHU.

[0031] The capture of control parameters may include any of the following: measuring temperature, detecting viruses or bacteria present in the air, measuring humidity levels, sensing odors, detecting the type of gas or the presence of particles in the air, such as carbon levels.

[0032] In another aspect of the invention, a system for ventilating a building comprising multiple zones, each zone including at least one air management unit (AHU), each AHU configured to perform a method for controlling different operating modes of the air management unit (AHU) based on control parameters between two zones. This system can be used in agricultural buildings. In another aspect, each zone can be a predetermined zone within an open area.

[0033] Each AHU can communicate with each other. Each AHU can be controlled by a server.

[0034] Features of the invention, which are considered novel, are specifically set forth in the appended claims. Other and further aspects and advantages of the invention will become apparent upon understanding the exemplary embodiments to be described, or will be pointed out in the appended claims, and various advantages not mentioned herein will come to the attention of those skilled in the art when using the invention in practice.

[0035] Other and further aspects and advantages of the invention will become apparent upon understanding of the exemplary embodiments to be described, or will be pointed out in the appended claims, and various advantages not mentioned herein will come to the attention of those skilled in the art when using the invention in practice. Attached Figure Description

[0036] The above and other aspects, features and advantages of the present invention will become more apparent from the following description with reference to the accompanying drawings, in which:

[0037] Figure 1 This is a perspective view of an embodiment of an AHU according to the principles of the present invention.

[0038] Figure 2 yes Figure 1 A decomposition diagram of AHU.

[0039] Figure 3 yes Figure 1 A cross-sectional view of the internal cavity of the AHU.

[0040] Figure 4 yes Figure 1A side sectional view of the AHU.

[0041] Figure 5 This is a perspective view of the fan assembly of an AHU according to the principles of the present invention.

[0042] Figure 6 This is a cross-sectional view of the connection between the housing of the fan assembly and the air duct of the AHU according to the principle of the present invention.

[0043] Figure 7 yes Figure 1 Top cross-sectional view of the AHU.

[0044] Figure 8 It is shown in the first operating mode. Figure 5 Front view of the fan assembly.

[0045] Figure 9 yes Figure 8 Top cross-sectional view of the fan assembly along the AA axis.

[0046] Figure 10 yes Figure 5 The front view of the fan assembly in the second operating mode.

[0047] Figure 11 yes Figure 10 Top cross-sectional view of the fan assembly along the BB axis.

[0048] Figure 12 yes Figure 1 Top cross-sectional view of the AHU.

[0049] Figure 13 This is an illustration of an embodiment of the control component of an AHU according to the principles of the present invention.

[0050] Figure 14 This is a diagram of a system used to regulate airflow in multiple zones.

[0051] Figure 15 This is a front perspective view of an embodiment of an AHU according to the principles of the present invention.

[0052] Figure 16 This is a rear perspective view of an embodiment of an AHU according to the principles of the present invention.

[0053] Figure 17 This is a perspective view of an embodiment of an AHU according to the principles of the present invention, mounted in a wall and viewed from a first region.

[0054] Figure 18 It was observed from the second region. Figure 17 A perspective view of AHU.

[0055] Figure 19 Seen from inside the wall Figure 17 Side view cross section of AHU. Detailed Implementation

[0056] The following describes a novel multi-mode air management unit or heat exchanger, as well as an air ventilation system and method. Although the invention is described with reference to specific illustrative embodiments, it should be understood that the embodiments described herein are merely examples and are not intended to limit the scope of the invention.

[0057] Now for reference Figure 1 An embodiment of an air management unit (AHU) 10 is shown. In such an embodiment, the AHU 10 includes a structure or frame 12, one or more pivot fan assemblies 20, and a heat exchange unit 50. The AHU may also include a controller 40. In some embodiments, the AHU 10 may also include a filtration system 70 and a vacuum system 80.

[0058] AHU 10 is typically located between two zones. In some embodiments, the first zone is in a controlled environment, such as an area inside a building, and the second zone is in an uncontrolled environment, such as an external or exterior area, for example, but not limited to, the exterior area of ​​a building. In some embodiments, AHU 10 includes a removable panel or door 14. The removable panel 14 is typically attached to the structure 12 of AHU 10. AHU 10 may include a housing 11 adapted to protect AHU 10 from external natural forces such as snow, rain, etc. Housing 11 is typically attached to structure 12. Housing 11 may also include an outer shell 13, which is typically used to protect and isolate the internal components of AHU 10 from the first and second zones. AHU 10 may also include a plurality of duct or pipe systems 16 fluidly connected to the first zone, each pivoting fan assembly 20, and the second zone.

[0059] In some embodiments, the structure 12 of the AHU 10 may also include a notch, recess, or other shape 18 adapted to receive a vehicle fork (e.g., a tractor). When the fork is inserted under and / or into the recess 18, the AHU 10 can be moved, raised, lowered, and manipulated by a vehicle. The AHU 10 can be easily installed in an opening in a building using a vehicle, as the vehicle can align the AHU 10 with the opening and lower it against the inner wall of the opening.

[0060] In other embodiments, the AHU 10 and / or structure 12 are adapted to be mounted flush with the edge of a wall or an opening where the AHU 10 is mounted. Flush mounting is generally intended to reduce the volume occupied by the AHU 10 in one area, typically an area within a building. Flush mounting typically means positioning the ductwork or air duct 16 and / or other components of the AHU 10 toward other areas, typically areas outside the building.

[0061] In a typical embodiment, in a first mode, fan assembly 20 is adapted to draw or drive air from a first region through a first inlet and blow the air toward an outlet connected to a second region, thereby forming a first air duct 2. In the first mode, fan assembly 20 or fan unit 22 is oriented along the general longitudinal direction of air duct 2. In a second mode, fan unit 22 or fan assembly 20 is pivoted or oriented to obstruct airflow in the first air duct 2. In a preferred embodiment, fan unit 22 or fan assembly 20 is rotated approximately 90 degrees from the longitudinal direction of the first air duct. In some embodiments, air from the first region is blown by fan assembly 20 toward heat exchanger unit 50 in the second mode.

[0062] In the third mode, fan assembly 20 is oriented to draw or blow air from the second region to the first region, thereby using the first air duct 2 in the opposite direction to the first mode. Typically, in the third mode, fan assembly 20 pivots approximately 180 degrees from the first mode. In the fourth mode, fan assembly 20 is adapted to block air in the first air duct 2 and form a second air duct 4. Preferably, in the fourth mode, fan assembly 20 pivots approximately 270 degrees or -90 degrees from the position of the first mode. In the fourth mode, air is preferably blown by fan assembly 20 from heat exchanger unit 50 to the first region.

[0063] Now for reference Figure 2 , Figure 2 It shows Figure 1 An exploded view of the AHU 10 shows some components selected. As shown, some components of the AHU 10 are removable or at least movable to facilitate user access to the components.

[0064] In some embodiments having a filtration system 70, the filtration system may be slidably connected to the structure 12 of the AHU 10. In other embodiments, the filtration system 70 is mounted to at least one set of guide rails 72 connected to the structure 12. The guide rails 72 allow the filtration system 70 to be at least partially moved into and out of the AHU 10. When the filtration system 70 is removed, it can be repaired or maintained.

[0065] In other embodiments, one or more fan assemblies 20 may be detachable from the AHU 10. In such embodiments, the fan assembly 20 is part of an outer housing or enclosure 6 that can slide into and out of the structure 12 or housing 11 of the AHU 10. The fan assembly 20 may be secured to the AHU 10 upon insertion. In such embodiments, the housing 11 or structure 12 includes surfaces or rails to slidably receive the fan assembly 20.

[0066] In embodiments including the vacuum system 80, the housing 11 or structure 12 of the AHU 10 may include an access door, panel, or shroud 14 covering the vacuum system 80. The purpose of the access door 14 is to provide access for repair or maintenance of the vacuum system 80 or other adjacent components. It is understood that any other known mechanism for accessing or exiting the vacuum system 80 may be used within the scope of this invention.

[0067] In a further embodiment, the AHU 10 may also include one or more doors 14 for access to one or more components, such as boxes or blocks, heat exchangers, fluid discharge devices, heaters, air conditioning units, etc. When one or more doors 14 are opened, each component can be pulled out or tilted to be angled. As an example, the heat exchange unit 50 can be completely removed, or one or more boxes 42 can be removed independently. Furthermore, one or more fan assemblies 20 can be removed from the AHU 10, for example, for maintenance or replacement purposes. The doors 14 may be embodied as sliding doors, pivot doors, or spring-loaded doors. It is understood that these components can be fixed or mounted to the structure 12 or housing 11 and can be further adapted to be accessible during operation. Components can be further installed or removed when the AHU 10 is installed in an opening in the building. In some embodiments, the AHU 10 may include doors 14 on a surface in a first area and corresponding doors 14 on a surface facing a second area. This allows the AHU 10 to be inspected or maintained when in the first area, typically inside the building, or when in the second area, typically outside.

[0068] Now for reference Figure 3 The housing 11 or structure 12 of the AHU 10 may include a chamber or box 15 typically located below different components (e.g., heat exchanger 50). The chamber 15 may include a sealing joint 17 typically between the hinge of the door 14 and the chamber 15. The joint 17 typically provides a barrier to liquid exiting the chamber 15 through such an opening. The structure 12 or chamber 15 of the AHU 10 may include multiple recesses, inclined surfaces, or passages 19. Multiple recesses 19 are typically adapted to trap liquid flowing within the chamber 15 and direct said liquid to a drain or liquid outlet. In the illustrated embodiment, the drain is located on the bottom surface of the chamber 15, preferably near the center of the bottom surface forming a low point. It will be understood that any other arrangement of recesses, inclined surfaces, and / or passages 19 that allows liquid to flow to the drain or opening is within the scope of this invention.

[0069] Now for reference Figure 4An embodiment of a fan assembly 20 is shown. The fan assembly 20 includes a first air duct 2, a housing 24 pivotally connected within the air duct 2, and a fan unit 22 mounted on the housing 24. The housing 24 typically includes an intake passage or opening 26 and an exhaust passage or opening 27. The fan assembly 20 may also include a pivoting member 28. In such embodiments, the pivoting member 28 pivots or orients the housing 24 (not shown). In other embodiments, the fan assembly 20 may include two fans or propellers (22, 22'). The two fans 22, 22' may be mounted in series and can be pivoted using the same pivoting member 28. It is understood that having two fans (22, 22') in the fan assembly 20 is generally intended to increase air pressure to provide better airflow to each fan assembly 20 than a fan assembly 20 with a single propeller. It is also understood that having two fans (22, 22') in the fan assembly 20 generally allows the fan assembly 20 to remain operational even if one of the two fans (22, 22') is defective. The fan (22, 22') of component 20 can be any type of fan known in the art, such as, but not limited to, an axial fan or a centrifugal fan.

[0070] Fan unit 22 typically includes a propeller and a motor. The fan unit may also include an integrated controller or switch to activate or deactivate the fan unit.

[0071] The fan assembly 20 also includes a duct 2 in fluid communication with the zone or heat exchanger 50. The duct 2 may be integrated into or molded into the housing 25 of the fan assembly 20. The duct 2 is typically formed or molded within the housing 25 of the fan assembly 20. The duct 2 may be an extension of the duct system 16. Therefore, if there is more than one duct 2 for a given propeller 22, the duct 2 is typically a convergence of multiple air paths.

[0072] In some embodiments, the fan assembly 20 includes two intersecting air ducts (2,4). The two air ducts (2,4) may intersect at an angle, preferably approximately 90 degrees. It will be understood that in other embodiments, the two air ducts (2,4) may intersect at different angles, such as, but not limited to, 60 degrees and 120 degrees, or 45 degrees and 135 degrees. Furthermore, the air ducts (2,4) may converge in any plane, such as, but not limited to, a horizontal or vertical plane. As an example, the two air ducts (2,4) may intersect each other at 60 degrees.

[0073] Now for reference Figure 5The housing 25 can be made of multiple parts and can have various shapes. In this embodiment, the housing 25 is made of a bottom 27 and a top 28. In other embodiments, the housing 25 can be made of more than two parts, or it can be a single piece. Different constructions are generally designed to facilitate manufacturing, assembly, and / or disassembly. The housing 25 can also be made of plastic or molded. The housing 25 and various other components of the AHU 10 can be rotationally molded. Furthermore, the shape, length, and overall construction of the ducts (2,4) can vary depending on the available space in the AHU 10 or the construction of the AHU 10 or the building. In such an embodiment, the ducts (2,4) are shaped as 90-degree elbows. It is understood that in other embodiments, the ducts (2,4) can have any construction based on a selected construction of the AHU 10.

[0074] The housing 24 of the fan assembly 20 is preferably pivotally mounted to the housing 25 using a pivoting mechanism 30. The pivoting mechanism 30 may include a pivoting component 32 that can be actuated by a motor 34. The pivoting component 32 orients or pivots the housing 24 about a substantially vertical axis 23. The pivoting component 32 may be embodied as a pivoting device or a bracket connected to a pivoting device suitable for rotating the pivoting axis 23.

[0075] In some embodiments, the pivoting mechanism 30 includes a servo motor 33 (not shown) and a pivoting member 32. The servo motor 33 is configured to control the rotation of the pivoting member 32, thereby controlling the orientation of the fan assembly 20. The pivoting member 32 is operatively connected to the housing 24. Since the fan unit 22 is mounted within the housing 24, the airflow is thus rotated. The housing 24 is typically pivotally mounted to the housing 25 via a central axis 23 of the housing 24, thereby allowing the housing 24 to rotate about itself, i.e., about the vertical axis 23. It will be understood that in other embodiments, the pivoting member 32 may be adapted to allow pivoting about an overall horizontal axis if the air ducts (2,4) are adapted accordingly. Having another axis of rotation allows for the implementation of a vertical duct 16, which is therefore highly advantageous in applications with limited space.

[0076] In other embodiments, the pivoting mechanism 30 may be operatively connected to or communicate with the controller 40. The controller 40 may be configured to start and / or stop the pivoting mechanism 30. The controller 40 may be further configured or programmed to control the radial / rotational position, rotational speed, and / or rotational direction of the pivoting mechanism 30. It is understood that the controller 40 may be a component of the AHU 10 or embodied as an external module.

[0077] The fan assembly 20 may also include an engagement mechanism 35 for engaging or disengaging the pivoting mechanism 30 of the fan assembly 20 or fan unit 22. In some embodiments, the engagement mechanism 35 is a clutch system that allows engagement or disengagement of the pivoting mechanism 30. In such an embodiment, the fan assembly 20 includes a drive mechanism 36 engaged by the engagement mechanism 35 and driving the pivoting mechanism 30. The drive mechanism 36 may include a drive belt or chain that engages with the spline 37 of the pivoting member 32 and the clutch system 35. The spline 37 is vertically movable to engage and then disengage the rotating mechanism 34. The rotating mechanism 34 (typically a motor) can rotate the drive shaft in either direction. A pivot handle 38 may also be connected to the spline 37 to raise or lower the spline 37. The pivot handle 38 allows a user to manually disengage the motor 34 from the spline 37 when needed.

[0078] The fan assembly may also include a tensioning system 39. The tensioning system 39 is slidably connected to the clutch system 35. The tensioning system 39 increases or decreases the tension in the drive belt 36 by moving the clutch system 35 away from or towards the pivoting mechanism 30. It is understood that the rotating mechanism 34 and the tensioning system 39 may be controlled by the controller 40.

[0079] The fan assembly 20 may also include at least one limit switch 42 configured to detect the current radial position of the housing 24 and transmit said position to the controller 40. In the illustrated embodiment, two limit switches 42 are configured to contact the disc 31 of the pivoting mechanism 30. Therefore, the disc 31 of the pivoting mechanism 30 (typically implemented as a pulley) may include disturbances, such as protrusions or recesses not shown, on or around the surface of the disc 31. As the disc 31 rotates, the disturbance contacts the limit switches 42, thereby activating one of the limit switches 42. Activation or deactivation of the limit switch 42 indicates that the housing 24 has pivoted to a predetermined position, such as a pivot of 90 degrees or 270 degrees. It is understood that other systems, such as a position encoder, can be used to determine the position of the disc 31.

[0080] Housing 24 includes sidewalls 21 alternately positioned between orifices or inlets / outlets. The sidewalls 21 are typically sized to at least partially block airflow from one of the ducts (2,4). In other embodiments, the sidewalls 21 may completely block airflow from one of the ducts (2,4), while the multiple orifices allow airflow from the fan unit 22 to circulate in the other ducts (2,4). Housing 24 is typically shaped to allow the fan unit 22 to pivot within the ducts (2,4), preferably at the intersections 23 of the multiple ducts.

[0081] In this embodiment, the sidewall 21 is curved. The curved sidewall 21 typically provides the housing 24 with a round, elliptical, or egg-shaped form. In some embodiments, the housing 24 has a circular shape or rounded edges to facilitate pivoting. It will be understood that any other shape that allows for pivoting and sealing functions, such as cylindrical, elliptical, circular, or even square, may be used.

[0082] The sidewall 21 may also include a flange or lip around its periphery. Such a flange or lip is typically designed to increase the rigidity of the sidewall 21 and / or seal the inlet / outlet orifice when in contact with the seal 44 of the orifice or duct 2.

[0083] In one embodiment, housing 24 can be removed from housing 25 or duct (2,4) without disassembling the entire duct (2,4) or housing 25. Similar to housing 25, housing 24 may also include a pair of more than one pair of sidewalls 21. As an example, housing 24 may include a top and a bottom.

[0084] The housing 24 may also include a sealing device 44, such as a rubber strip or other sealing material, to allow effective blocking of air between the wall 21 and the duct (2,4). The sealing device 44 typically surrounds an opening in the housing 24, such as an inlet and / or outlet. The sealing strip 44 may also be attached to the edge of the sidewall 21 to block air at the junction of the sidewall 21 and the duct (2,4) or housing 25. It is understood that any type of sealing device that blocks air from a duct along with the sidewall 21 can be used within the scope of the invention.

[0085] Now for reference Figure 6 A cross-sectional view is shown of the connection between the housing 24 of the fan assembly 20 and the air ducts (2,4) or the housing 25. When the housing 24 is positioned to generate airflow in an air duct (2,4), the sidewall 21 of the housing 24 is hermetically connected to a sealing joint 44 located on the periphery of the joint between the air ducts (2,4) or between the housing 25 and the housing 24. Therefore, the airflow present in the air ducts (2,4) does not leak or is substantially retained within the fan unit 22 having said air ducts. The sealing joint 44 can be made of any sealing material known in the art.

[0086] In other embodiments, system 10 may also include sensors (not shown) upstream and / or downstream of each fan 22. Such sensors are configured to analyze airflow. In one example, the sensors detect and transmit data about airflow or airflow pressure. When airflow or pressure decreases or increases, an alarm or any action may be triggered. As another example, if airflow decreases, the generated data may be associated with a leak or perforation causing air loss. In such an example, fan assembly 20 or housing 24 may be disassembled to further investigate the air loss. The sensors may be gas sensors adapted to detect various gas properties. For example, sensors may be adapted to detect the presence of bacteria and / or viruses in the airflow. Sensors may also include sensors configured to detect odors. In one embodiment, the gas sensor may be an electronic nose adapted to detect various gases and odors.

[0087] In a preferred embodiment, the sensor is attached to or mounted on the housing 24 of the fan assembly 22, typically on a bracket located in the airflow generated by the fan assembly 22. As the housing 24 pivots, the sensor remains in the airflow, thus limiting the number of sensors required, since the sensors are always tracking the airflow.

[0088] Now for reference Figure 7 The image shows a top sectional view of the AHU 10. In such an embodiment, the fan assembly 20 pivots to form a first air duct 2. In this embodiment, air from the second region is blown by the propeller 22 from the outlet air duct to the inlet air duct facing the first region.

[0089] In some embodiments, outside air passes through the heat exchange unit 50 before being blown by the propeller 22. As it passes through the heat exchange unit 50, the warm airflow exchanges energy with the cold airflow, resulting in a supply airflow that is warmer than the initially collected airflow. A second mode requires the propeller 22 to pivot 180 degrees or be in the opposite direction to the first mode. In this mode, the airflow continues to move in the first duct 2 in the opposite direction, thus the airflow flows from the first zone to the heat exchange unit 50.

[0090] In the third and fourth operating modes, airflow can be directed directly from one area to another, for example, without passing through heat exchanger 50. In these modes, all fans 22 can direct airflow into or out of the first area toward the second area in the same direction, or in the opposite direction. In the third and fourth modes, airflow is directed into the second duct 4 and is at least partially blocked in the first duct 2. To change the operating mode, housing 24 can rotate clockwise or counterclockwise around the central pivot point 23 until the desired position is reached.

[0091] In another embodiment of the invention, sensors can be mounted at different locations inside and outside the AHU 10 to detect whether ice has formed and whether airflow or pivoting motion of the propeller assembly is blocked or reduced. The direction of fan 22 can be temporarily reversed to deliver warm air to another cold area until the situation is resolved.

[0092] In another mode, the housing 24 of the fan assembly 20 pivots or is oriented within the fan assembly 20 to form a first air duct, also known as a blower mode. Air from the first or second region enters the inlet of the first air duct, passes through the propeller assembly, and is blown toward the outlet of the first air duct toward the second or first region, respectively.

[0093] In other embodiments, AHU 10 may include louvers 46. Louvers 46 may be located between the first and / or second region and the fan assembly 20. In other embodiments, louvers 46 are mounted between a baffle 48 and the fan assembly 20. When the fan assembly 20 is oriented in this manner, louvers 46 are generally passive and block external light from entering the interior region. This is particularly useful in uses where animals are present, as light can frighten some animals, such as in tilling or agricultural uses.

[0094] In other embodiments, the AHU 10 includes baffles 48 at each fluid inlet and fluid outlet. The baffles 48 may be gravity-driven or mechanically operated, adapted to be opened and closed by an actuation mechanism (not shown). Actuation of the baffles 48 may be controlled by a controller 40.

[0095] In some embodiments, the AHU 10 includes one or more additional fan assemblies 20 stacked horizontally or vertically to the first fan assembly 20. Typically, two fan assemblies 20 are necessary for the heat exchange unit 50 to function properly, as two airflows at different temperatures are required for heat exchange. In such embodiments, the two fan assemblies 20 can pivot to each form a second airflow duct 4, also known as a blower mode. It is understood that the blower mode can be adapted to blow air from a first region to a second region and vice versa by pivoting the propeller assembly 20 180 degrees.

[0096] As shown in the figure, it can be understood that the fan assembly 20 can be offset from the center width direction of the AHU 10. Offsetting the fan assembly 20 from the center of the AHU 10 facilitates the mounting of other components inside the structure 12 rather than outside the structure 12. For example, the off-center configuration can allow the vacuum system 80 to be mounted inside the structure 12 of the AHU 10 rather than outside of it.

[0097] In yet another embodiment, the AHU 10 may also include a supplemental air unit (not shown), also known as a recirculation exhaust unit. In such an embodiment, the supplemental air unit is adapted to mix the airflow entering the AHU 10 (e.g., outside air) with airflow from the building (typically heated airflow). By mixing the warm airflow with the incoming airflow, which typically has a lower temperature, the resulting composite airflow has a higher temperature than the incoming airflow.

[0098] A supplemental air unit is typically designed to reduce the energy required to generate a warm synthetic airflow. In one embodiment, the supplemental air unit includes a duct with a damper. Preferably, the duct is fluidly connected to a docking point upstream of the heat exchange unit 50 that provides the incoming airflow. In another embodiment, the supplemental air unit may include a duct 16 with a damper, which is fluidly connected to an exhaust airflow exiting the heat exchange unit 50 and an incoming airflow upstream of the heat exchange unit 50. In both embodiments, the exhaust airflow has a higher temperature than the incoming airflow. It is understood that the duct 16 and the damper can have any shape and configuration known in the art. In another embodiment, the opening and closing of the damper can be controlled by communicating directly with the AHU 10 via a network.

[0099] Back Figure 5 The illustration shows one embodiment of the fan assembly 20 forming a first air duct 2. In this embodiment, the air duct 2 includes a first exterior in fluid communication with a first zone and a second exterior in fluid communication with a heat exchanger unit 50. In this embodiment, the air duct 2 is curved to allow air to be directed to a housing portion that may include the heat exchanger unit 50, which has limited space. It will be understood that in other embodiments, the air duct 2 surrounding the housing 24 may have any other compatible shape to optimize airflow and fit within the AHU 10.

[0100] The second air duct 4 typically includes a third exterior in fluid communication with the first zone and a fourth exterior in fluid communication with the second zone. These third and fourth exteriors typically form the second air duct 4. Other additional exteriors may be added to form supplementary air ducts. For example, a third air duct (not shown) may be connected to the bottom of the top fan assembly 20 and the top of the bottom fan assembly 20.

[0101] In such an embodiment, the fan assembly 20 includes a housing 24. In a typical embodiment, the fan unit 22 is located near the junction of the first and second air ducts (2,4). In some embodiments, the housing 24 includes a pivoting member 32 pivotally mounted to the housing 24 at a pivot point 23. In one embodiment, the pivoting member 32 may be a servo motor, while in another embodiment, the pivoting member 32 may be connected to a controller 40 or to a motor (not shown) to control and / or automate the rotation of the housing 24. The pivoting member may also include a limit switch 42 for measuring the rotation of the fan assembly 20. It is understood that any other means allowing the fan unit 22 to pivot relative to the air ducts (2,4) may be used within the scope of the invention. As an example, the motor 34 may be mounted above or below the housing 24, depending on the desired performance and / or available space. The housing 24 may be curved, generally designed to allow the fan 22 to rotate freely within the air ducts (2,4) while sealing the exterior of the first air duct 2 or the second air duct 4 on the other hand. It is understood that any other shape having a similar function to the curved mounting member 24 described above may be used within the scope of the invention.

[0102] Now for reference Figure 8 and 9 An embodiment of the fan assembly 20 in a first operating mode is shown. In such an embodiment, the fan assembly 20 is arranged such that air flows from the interior of a first region to the heat exchange unit 50, thereby forming a first air duct 2. When the fan assembly 20 is positioned in the first operating mode, the second air duct 4 is blocked and / or sealed by the sidewall 21 of the fan assembly 20, thereby acting as a valve.

[0103] Now for reference Figure 10 and 11 An embodiment of the fan assembly 20 in a second operating mode is shown. In such an embodiment, the fan assembly 20 is positioned to allow air to flow directly between the first and second regions (or vice versa), thereby forming a second air duct 4. When the fan assembly 20 is positioned in the second operating mode, the first air duct 2 is blocked and / or sealed by the sidewall 21 of the fan assembly 20, thereby acting as a valve.

[0104] It is understood that in some embodiments, the opening may not be hermetically sealed from the second air duct 4 or the first air duct 2. In some embodiments, the air duct (2,4) or the housing 25 may not be in contact with the housing 24, but may still block most of the airflow.

[0105] Now back Figure 1 and 2An embodiment of a heat exchange unit 50 is illustrated. The heat exchange unit 50 can be any heat exchange unit that allows heat exchange between two or more airflows within it. In the illustrated embodiment, the heat exchange unit 50 includes a plurality of replaceable counter-current heat exchange boxes or plates 52. In such an embodiment, each plate 52 may be adjacent to and / or in contact with another plate 52, preferably via at least one buffer 54. The buffer 54 may be embodied as a frame surrounding the side surface of the plate 52 and is typically made of a flexible or semi-flexible material, such as, but not limited to, rubber. The buffer surface 54 may also have thermal insulation and liquid repellency properties to prevent heat or moisture from circulating between two adjacent plates 52. The buffer surface 54 may also be configured to reduce forces applied to adjacent surfaces of each plate 52 to prevent possible breakage. It can be noted that individual plates 52 of the heat exchange unit 50 can be removed independently from other plates 52 of the same heat exchange unit 50, for example, for maintenance or replacement.

[0106] Understandably, over time, adjacent blocks 52 may drift away from each other, causing heat or moisture leakage around the heat exchange unit 50. The AHU 10 may also include a compression system 56. The compression system 56 is configured to be usable by a user when the AHU's door 14 is open. In some embodiments, the compression system 56 includes a handle 57. The handle 57 can be pivotally connected to a push rod 58 located on the heat exchange blocks 52. Thus, a user can pivot the handle 57 to press the push rod 58 against one side of the heat exchange unit 50, thereby pressing each adjacent block 52 together.

[0107] Now for reference Figure 12 AHU 10 may include a filtration system 70. The filtration system 70 is configured to filter airflow between the duct 16 of the fan assembly 20 and the area. Therefore, airflow entering or leaving the structure 12 from the external area can pass through and be filtered by the filtration system 70. The filtration system 70 shown is a centrifugal filter activated by an actuator 74 located at the center of the cylinder of the filter 70. It is understood that the filtration system 70 may cover the entire area around the outlet or inlet of the associated duct 16, so that all airflow is filtered. The filtration system 70 may also include a limit switch 75 configured to count the number of rotations of the system 70 for better tracking and / or control of the system 70. In some embodiments, the filtration system 70 may include a motor instead of an actuator to rotate the filter media. The motor 74 may be located at the center of the rotating filter media.

[0108] Back Figure 1 and 2AHU 10 may also include a vacuum system 80. Vacuum system 80 may include a vacuum device 82, one or more pipes 84, and an outlet. Vacuum system 80 is typically configured to clean filtration system 70. In such embodiments, inlet pipe 85 is positioned near the filter media to remove debris or particles from the filter as it rotates. Vacuum system 70 may also include a liquid discharge pipe system 86 in fluid communication with a liquid outlet of the AHU. Liquid discharge pipe system 86 is configured to remove moisture or liquid from vacuum system 70 out of AHU 10. Vacuum system 80 or the discharge pipe may include a one-way valve or valve 87 to prevent the entry of airflow from outside the liquid discharge pipe system 86. It is understood that vacuum system 80 may be in fluid communication with other systems of AHU 10 if desired, and is therefore not limited to fluid communication with filtration system 70 and liquid outlet of AHU 10.

[0109] Now for reference Figure 13 An embodiment of the control system 90 of AHU 10 is illustrated schematically. Figure 13 Arrows typically indicate the direction of data transmission between components. System 90 includes a sensor 92 connected to component 94 of AHU 10, and a controller 91 adapted to receive data from sensor 92 and external resource 96 via network 98.

[0110] Sensor 92 is typically mounted or coupled to some or all of the components 94 of AHU 10 and is configured to collect data from the operation and status of the components 94. As an example, a carbon dioxide sensor may be mounted in the outside air supply shaft to determine the level of carbon dioxide entering the building. Another example could be an airflow sensor mounted at the intake or inlet of AHU 10 or within the exhaust duct. The airflow sensor determines the airflow velocity and can determine whether ice or debris is obstructing the airflow. Sensor 92 may be configured to transmit data to controller 91.

[0111] Controller 91 can be embodied in any computerized device, such as a controller board, computer, or small-format computerized device. Controller 91 can be located internally or externally to AHU 10. Controller is typically configured to receive data collected from sensor 92, process the received data and / or calculate whether the data exceeds some predetermined threshold, send or receive the received or processed data in communication with network 98, and communicate with component 54. The presented order does not necessarily represent the actual operating order of controller 91; this order can be changed and will be determined by the parameters of network 98. Controller 91 is also configured to control multiple components, such as starting or stopping fan assembly 20, actuating the pivoting of fan assembly 20, and adjusting the speed of one or more propellers 22.

[0112] Information from external resources 96 may include public alerts, weather information, or any connection to remote systems that provide data, issued by authorities or relevant organizations.

[0113] In some other embodiments, the controller 91 may also be configured to execute a program that provides deep learning capabilities to identify the optimal behavior for simultaneous multi-region optimal control. The identification of the optimal behavior may use historical data as parameters.

[0114] Now for reference Figure 14 An embodiment of a system for regulating airflow in multiple zones 100 is illustrated. System 100 includes multiple air handling units (AHUs) 10 communicating with a first zone 102 and a second zone 104, each AHU 10 forming a separate zone(s) (zones 1 to 3 in this embodiment). It is understood that a zone may include multiple AHUs 10. Each AHU includes a control system 90 adapted to communicate with a network 98. In one embodiment, the first zone is the interior of a building, and the second zone is the exterior of that building. In other embodiments, the first and second zones are the interiors of the same or different buildings.

[0115] The control system 90 of each AHU 10 uses sensors 92 to collect data from component 94. This data may represent characteristics or parameters of the first area 102, the second area 104, or the AHU 10 itself. Each controller 90 can transmit the collected data to a central controller 106 via a network 98, such as, but not limited to, a server, computer, tablet, smartphone, or any computerized device or computing device. The central controller 106 can also communicate with each AHU 10.

[0116] The central controller 106 can be configured to display or transmit data to a user via computerized devices connected to the network 98 regarding the performance of one or more areas 102, the AHU 10, the air quality of the outside 102, or any other relevant information.

[0117] The central controller 106 can also be configured to receive and process requests from users to change possible control parameters and communicate the request or calculated action to the AHU 10. As an example, a request to adjust the building's interior temperature could be made, or the AHU 10's sleep timer could be adjusted to save energy.

[0118] In some embodiments, if the first AHU 10 may be unable to connect to the central controller 106, the first AHU 10 may establish a connection with a second reachable AHU 10 that communicates with the central controller 106. Therefore, the second AHU 10 can act as an intermediary between the first AHU 10 and the central controller 106 until the connection between the first AHU 10 and the central controller 106 is restored. In another embodiment, the second AHU 10 may also transmit its data, along with data from the previous AHU 10, to other AHUs 10 until the data reaches an AHU that can reach the central controller 106.

[0119] The central controller 106 can also be configured to receive data from external providers 108, such as weather stations or toxic gas carrier alarm providers. The central controller 106 can also be configured to control the AHU 10 when one or more parameters exceed acceptable ranges or if an alarm is received from such an external provider 108. The central controller 106 can be configured to send requests to multiple or all AHUs 10 to minimize the hazardous effects of external factors. For example, the central controller 106 can be configured to generate positive pressure in the building by allowing air to pass through filters suitable for absorbing pollutants or hazardous substances. As an example, the central controller 106 can require all AHUs 10 to operate as inlet blowers and require the use of filters for all air entering the building. As another example, upon receiving an alarm about a nearby chemical fire, the central controller 106 can require the AHUs 10 to be configured to prevent air intake on the windward side of the building by shutting off the supply air operation of a specific AHU 10. System 100 is particularly useful for ventilation of buildings comprising multiple zones, each including at least one air AHU 10 as described above. For example, this system can be used in agricultural buildings.

[0120] Now for reference Figure 15 The previous view illustrates an embodiment of AHU 10. The embodied AHU 10 includes a filtration system 70, two fan assemblies 20, a vacuum system 80, a controller 40, and a closed door 14 above the housing area. The visible side of the AHU 10 can typically be mounted facing an area within a building and can be mounted flush with the supporting walls of the building. It will be understood that the illustrated AHU 10 may include any of the features described above.

[0121] Now for reference Figure 16 An embodiment of AHU 10 is shown in the rear view. The embodied AHU 10 includes two fan assemblies. The visible side of the AHU 10 can typically be mounted facing an area outside the building and can be mounted flush with the supporting wall of the building. It will be understood that the AHU 10 shown may include any of the features described above.

[0122] Now for reference Figures 17 to 19 An embodiment of an AHU 10 installed in a wall 60 is shown. In such an embodiment, the AHU 10 is installed in an opening 61 in the wall 60 of the building. The AHU 10 is located between a first region 62 and a second region 64. In typical use, the first region 62 is located inside the building, and the second region 64 is located outside the building. In this embodiment, the AHU 10 is installed flush with the inner wall 60. Access for maintenance or other purposes can be provided through one or more doors 14 located outside and inside the unit 10. In the flush-mounted embodiment, the AHU 10 may protrude from the surface of the wall 60 to contact the second region 64. In the illustrated embodiment, the AHU 10 protruding in the second region 64 allows for a first entrance / exit on the side wall and another entrance / exit on the rear wall. It is understood that any other arrangement of the AHU 10 in the wall 60 is included within the scope of the invention.

[0123] While exemplary and currently preferred embodiments of the invention have been described in detail above, it should be understood that the concepts of the invention may be implemented and used in other ways differently, and the appended claims are intended to be interpreted as including these variations beyond the scope limited by the prior art.

Claims

1. A fan assembly, the fan assembly comprising: The housing includes a first pair of air intake and exhaust channels configured to be connected to a first air duct, and a second pair of air intake and exhaust channels configured to be connected to a second air duct. and A fan unit, which is pivotally mounted between the first pair and the second pair of intake and exhaust channels in the housing; In the first mode, the fan unit is pivotally oriented to allow a first airflow generated by the fan unit to enter the first air duct and restrict the airflow to enter the second air duct; In the second mode, the fan unit is pivotally oriented to restrict the airflow into the first duct and allow a second airflow generated by the fan unit to enter the second duct.

2. The fan assembly of claim 1, wherein in the second mode, the fan unit blocks the airflow in the first air duct.

3. The fan assembly of claim 1, wherein the fan unit, which is mounted within the housing, is pivotally mounted to the housing.

4. The fan assembly of claim 1, in a third mode, wherein the fan unit is pivotally oriented to generate a third airflow in the first duct that is opposite in direction to the first airflow.

5. The fan assembly of claim 2, wherein in the first mode, the fan unit blocks the airflow in the second duct.

6. The fan assembly of claim 1, in a third mode, wherein the fan unit is pivotally oriented to generate a third airflow in the first air duct, the third airflow being opposite to the first airflow.

7. The fan assembly of claim 1, further comprising a pivoting mechanism connected to the controller to pivot the housing relative to the first air duct.

8. A multi-mode air management unit (AHU) between a first zone and a second zone, the air management unit comprising: structure; Heat exchanger; The fan assembly connected to the structure as described in any one of claims 1 to 7, The pair of intake and exhaust channels of the first fan assembly are in fluid communication with the first region, and the second pair of intake and exhaust channels of the heat exchanger and the first fan assembly are in fluid communication with the first region and the second region.

9. The air management unit of claim 8, comprising a fan assembly connected to the structure as described in any one of claims 1 to 7, wherein a first pair of intake and exhaust channels of the second fan assembly are in fluid communication with a first region, and the heat exchanger and the second pair of intake and exhaust channels of the second fan assembly are in fluid communication with the first region and the second region.

10. The air management unit of claim 9, wherein the pivoting of the fan unit of the first fan assembly is independent of the pivoting of the fan unit of the second fan assembly, and the relative position of each fan unit of the first fan assembly and the second fan assembly allows for different operating modes of the air management unit.

11. A method for alternating between a first airflow mode and a second airflow mode, the method comprising: In the first airflow mode, a fan unit is pivotally oriented relative to the housing, the fan unit intersecting with a first air duct and a second air duct to generate a first airflow in the first air duct and restrict the airflow in the second air duct; In the second airflow mode, the fan unit is pivotally oriented relative to the housing to restrict or block the first airflow in the first air duct and generate a second airflow in the second air duct.

12. The method of claim 11, used to control different operating modes of an air management unit based on control parameters between two zones, the method comprising: The controller receives control parameters from one or more capture devices of the air management unit; The controller determines the operating mode based on the received control parameters; Based on the determined operating mode, the fan unit is oriented relative to the housing and the second air duct to generate the first airflow or block the airflow in the first or second air duct.

13. A system for ventilating a building comprising multiple zones, each zone including at least one air management unit as claimed in claim 8, each air management unit configured to perform the method as claimed in claim 12.

14. The system of claim 13, used in agricultural buildings, wherein each air management unit has heating and cooling functions.

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